ntp up to 4.2.8p6/4.3.91 ntpd Sybil data processing

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in ntp up to 4.2.8p6/4.3.91. Affected by this issue is some unknown functionality of the component ntpd. The manipulation leads to data processing (Sybil). This vulnerability is uniquely identified as CVE-2018-7170. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in ntp up to 4.2.8p6/4.3.91 (Network Management Software). It has been rated as critical. This issue affects some unknown functionality of the component ntpd. The manipulation with an unknown input leads to a data processing vulnerability (Sybil). Using CWE to declare the problem leads to CWE-19. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

nptd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.

The bug was discovered 02/28/2018. The weakness was disclosed 03/06/2018 by Matt with Cisco as confirmed posting (Bugtraq). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2018-7170 since 02/15/2018. The exploitation is known to be easy. The attack may be initiated remotely. A simple authentication is required for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 107046 (FreeBSD : ntp -- multiple vulnerabilities (af485ef4-1c58-11e8-8477-d05099c0ae8c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171674 (SUSE Enterprise Linux Security Update for ntp (SUSE-SU-2018:3352-1)).

Upgrading to version 4.2.8p7 or 4.3.92 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (107046) and SecurityFocus (BID 103194†). The entries VDB-114138, VDB-114139, VDB-114140 and VDB-114231 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Sybil
Class: Data processing / Sybil
CWE: CWE-19
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 107046
Nessus Name: FreeBSD : ntp -- multiple vulnerabilities (af485ef4-1c58-11e8-8477-d05099c0ae8c)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 865719
OpenVAS Name: Fedora Update for ntp FEDORA-2018-de113aeac6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: ntp 4.2.8p7/4.3.92

Timelineinfo

02/15/2018 🔍
02/27/2018 +12 days 🔍
02/28/2018 +1 days 🔍
02/28/2018 +0 days 🔍
02/28/2018 +0 days 🔍
03/06/2018 +6 days 🔍
03/06/2018 +0 days 🔍
03/07/2018 +1 days 🔍
01/15/2025 +2506 days 🔍

Sourcesinfo

Advisory: SA_18_13⛔
Researcher: Matt
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-7170 (🔍)
GCVE (CVE): GCVE-0-2018-7170
GCVE (VulDB): GCVE-100-114137

OVAL: 🔍

SecurityFocus: 103194 - NTP CVE-2018-7170 Incomplete Fix Remote Security Vulnerability

See also: 🔍

Entryinfo

Created: 03/07/2018 08:00
Updated: 01/15/2025 04:25
Changes: 03/07/2018 08:00 (77), 01/10/2020 20:51 (7), 02/17/2023 08:32 (3), 01/15/2025 04:25 (15)
Complete: 🔍
Cache ID: 216:AF6:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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